Mohamed A AbdelrasoulInvestigation of possible contribution of the Solar and geomagnetic activities on global surface temperature.
Abstract. Global warming in the troposphere &#97;&#110;&#100; the decrease of stratospheric ozone concentration has became a major concern to the scientific community. The increase in greenhouse gases &#97;&#110;&#100; aerosols concentration are believed to be the main cause of this global change in the lower atmosphere &#97;&#110;&#100; in stratospheric ozone. However, there are natural sources, The present work we have investigated the effect of solar &#97;&#110;&#100; geomagnetic parameters on the mean surface air temperatures recorded at countries which covers a wide range of geographic latitudes. In this case we have ed six countries via northern &#97;&#110;&#100; southern hemispheres to enables us to understanding the existence of solar activity effects on the regional/global temperatures. We considered the parameters temperature &#97;&#110;&#100; solar activity indicators data for the period data ranging from 1880 to 2011.Generally, our results displayed that the solar variability parameters played an important role in climate changes &#97;&#110;&#100; cannot be excluded from the responsibility of continuous global regional warming. We think that the combined effect of solar-induced changes &#97;&#110;&#100; increase in the atmospheric greenhouse gases offer the best explanation yet for the observed rise in average global temperature over the recent years.